Method for producing a decorative mineral composite body, decorated mineral composite body and use of a multi-layer film

A methods for producing a decorated mineral composite body using at least one multilayer film, wherein the method comprises the following steps:

• a) providing at least one forming element with at least one outer surface and at least one inner surface,
• b) applying a flowable or plastically deformable, mineral construction material mixture, which comprises water and at least one mineral binding agent, to the at least one inner surface of the forming element,
• c) at least partially solidifying the mineral construction material mixture to obtain a dimensionally stable, mineral green body, and
• d) at least partially hardening the mineral construction material mixture, wherein
• the multilayer film has a carrier ply and a transfer ply, which contains at least one decorative element, arranged on the carrier ply,
• wherein the transfer ply has at least one anionically functionalized primer layer on the side facing away from the carrier ply, and
• wherein the at least one anionically functionalized primer layer contains at least one polymer having at least one free, anionic, functional group, and
• wherein I), before step b), the at least one multilayer film is arranged with the side of the carrier ply facing away from the at least one anionically functionalized primer layer on the at least one inner surface of the provided forming element, and, in step b), the at least one anionically functionalized primer layer is brought into contact, at least partially, with the flowable or plastically deformable, mineral construction material mixture, wherein, in step c), a decorated, dimensionally stable, mineral green body is obtained,
• and/or
• wherein II), in and/or after step c), the at least one multilayer film is arranged with the at least one anionically functionalized primer layer at least partially on the dimensionally stable, mineral green body, wherein a decorated, dimensionally stable, mineral green body is obtained, and
• wherein, in alternatives I) and II), a decorated mineral composite body is obtained after step d).